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Title: Does Biliodigestive Anastomosis Have Any Effect on the Reversal of Hepatopulmonary Syndrome in a Biliary Cirrhosis Experimental Model?
Authors: CORBI, Leonardo ErvolinoTANNURI, Ana Cristina AounBRAZ, Maria Julia de AroPAES, Vitor RibeiroSBRAGIA, LourencoFIGUEIRA, Rebeca LopesCOSTA, Karina Miura daCOELHO, Maria Cecilia MendoncaGONCALVES, Josiane OliveiraSERAFINI, SuellenTANNURI, Uenis
Citation: DIGESTIVE DISEASES AND SCIENCES, v.64, n.11, p.3192-3202, 2019
Abstract: Background Biliary cirrhosis is associated with hepatopulmonary syndrome (HPS), which is related to increased posttransplant morbidity and mortality. Aims This study aims to analyze the pathophysiology of biliary cirrhosis and the onset of HPS. Methods Twenty-one-day-old Wistar rats were subjected to common bile duct ligation and were allocated to two groups: group A (killed 2, 3, 4, 5, or 6 weeks after biliary obstruction) and group B (subjected to biliodigestive anastomosis 2, 3, 4, 5, or 6 weeks after the first procedure and killed 3 weeks later). At the killing, arterial blood was collected for the analyses, and samples from the liver and lungs were collected for histologic and molecular analyses. The gasometric parameters as well as the expression levels of ET-1, eNOS, and NOS genes in the lung tissue were evaluated. Results From a total of 42 blood samples, 15 showed hypoxemia-(pO(2) < 85 mmHg) and 17 showed an increased oxygen gradient [p (A-a)-O-2 > 18 mmHg]. The liver histology revealed increased ductular proliferation after common bile duct ligation, and reconstruction of bile flow promoted decreased ductular proliferation 5 and 6 weeks post-common bile duct ligation. Pulmonary alterations consisted of decreased parenchymal airspace and increased medial wall thickness. Biliary desobstruction promoted transitory improvements 5 weeks after biliary obstruction (increased parenchymal airspace and decreased MWT-p = 0.003 and p = 0.004, respectively) as well as increased endothelin expression levels (p = 0.009). Conclusions The present model showed lung tissue alterations promoted by biliary obstruction. The biliodigestive anastomosis had no clear direct effects on these alterations.
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Artigos e Materiais de Revistas Científicas - FM/MCG
Departamento de Cirurgia - FM/MCG

Artigos e Materiais de Revistas Científicas - FM/MPE
Departamento de Pediatria - FM/MPE

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

Artigos e Materiais de Revistas Científicas - HC/ICr
Instituto da Criança - HC/ICr

Artigos e Materiais de Revistas Científicas - LIM/26
LIM/26 - Laboratório de Pesquisa em Cirurgia Experimental

Artigos e Materiais de Revistas Científicas - LIM/30
LIM/30 - Laboratório de Investigação em Cirurgia Pediátrica

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